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Myocarditis after receiving a Covid vaccine is rare. Pfizer and Moderna are researching possible long-term risks for those who recovered from heart problems after vaccination.
More than half of the myocarditis or pericarditis cases reported to the U.S. Vaccine Adverse Event Reporting System after patients had received either the Pfizer/BioNTech or Moderna vaccines were ...
(Reuters) -The U.S. drug regulator on Friday added a warning to the literature that accompanies Pfizer Inc/BioNTech and Moderna COVID vaccine shots to indicate the rare risk of heart inflammation ...
In Com-COV2, the first dose is the Oxford–AstraZeneca vaccine or the Pfizer vaccine, and the second dose is the Moderna vaccine, the Novavax vaccine, or a homologous vaccine equal to the first dose, with an interval of 56 or 84 days between doses. [333]
The Moderna news followed preliminary results from the Pfizer-BioNTech vaccine candidate, BNT162b2, with Moderna demonstrating similar efficacy, but requiring storage at the temperature of a standard medical refrigerator of 2–8 °C (36–46 °F) for up to thirty days or −20 °C (−4 °F) for up to four months, whereas the Pfizer-BioNTech ...
On 16 December 2021, the US Centers for Disease Control and Prevention (CDC) recommended the Moderna and Pfizer-BioNTech vaccines should be preferred over the Janssen vaccine, following growing concerns about rare blood clots. [49] [50] Janssen should still be offered to people who specifically request it. [51]
The Pfizer–BioNTech COVID-19 vaccine, sold under the brand name Comirnaty, [2] [33] is an mRNA-based COVID-19 vaccine developed by the German biotechnology company BioNTech. For its development, BioNTech collaborated with the American company Pfizer to carry out clinical trials , logistics, and manufacturing.
Ever since the vaccines from Pfizer and Moderna were authorized in late 2020, anti-vaccination groups in the U.S. have blamed the shots for fatal heart problems in young athletes.